Home » Eclipse Projects » Standard Widget Toolkit (SWT) » SWT+Swing hang application
| SWT+Swing hang application [message #467108] |
Wed, 25 January 2006 05:53  |
Eclipse User |
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Originally posted by: nicolas._no.spam_legrain.fr
Hi,
I have a problem using SWT and Swing in an Eclipse RCP application.
We would like to use only swing components in SWT Shell so I create a
method that take a Shell and put a JPanel in.
public void swingInComposite(Shell shell, JPanel swingPanel) {
Composite c = new Composite(shell,SWT.NONE);
FillLayout cLayout = new FillLayout(SWT.HORIZONTAL);
c.setLayout(cLayout);
c.setSize(563, 265);
//Composite
Composite compositeEmbedded = new Composite(c, SWT.EMBEDDED);
FillLayout compositeEmbeddedLayout = new FillLayout(SWT.HORIZONTAL);
compositeEmbedded.setLayout(compositeEmbeddedLayout);
//Frame AWT => heavy weight component to avoid focus problems
Frame frameAWT = SWT_AWT.new_Frame(compositeEmbedded);
compositeEmbedded.setData(frameAWT);
//Panel AWT
Panel panelAWT = new Panel();
BorderLayout panelAWTLayout = new BorderLayout();
panelAWT.setLayout(panelAWTLayout);
frameAWT.add(panelAWT);
//Adding the swing panel
panelAWT.add(swingPanel, BorderLayout.CENTER);
}
If in a such Shell (shell+jpanel) I open a JOptionPane.showConfirmDialog
(...) on the shellClose event my application hang.
If I open the same JOptionPane.showConfirmDialog(...) on an empty Shell,
that's OK. I can make a choice in the JOptionPane and return to the shell.
I don't understand my problem.
Thanks for your help.
Here is a code snippet :
To test the 2 version (hang and don't hang), comment uncomment the call
to swingInComposite(Shell s, JPanel p) in initAndShowUI().
/*********************************************************** *************************************/
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Frame;
import java.awt.Panel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;
import org.eclipse.swt.SWT;
import org.eclipse.swt.awt.SWT_AWT;
import org.eclipse.swt.events.ShellAdapter;
import org.eclipse.swt.events.ShellEvent;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Shell;
public class TestShellEvent {
public Shell shell;
public AbstractController controller;
public TestShellEvent() {}
public static void main(String[] args) {
org.eclipse.swt.widgets.Display display = org.eclipse.swt.widgets.Display
.getDefault();
TestShellEvent test = new TestShellEvent();
test.initAndShowUI();
while (!test.shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
//
public void initAndShowUI() {
shell = new Shell();
shell.setSize(600, 600);
shell.setText("Test");
this.controller = new Controller();
shell.addShellListener(new MyShellAdapter());
//comment this for the version that don't hang (empty shell)
swingInComposite(shell,new SampleSwingPanel());
shell.setLayout(new FillLayout());
shell.layout();
shell.setVisible(true);
}
/**
* Embed a JPanel into an SWT Shell
* @param shell
* @param swingPanel
*/
public void swingInComposite(Shell shell, JPanel swingPanel) {
Composite c = new Composite(shell,SWT.NONE);
FillLayout cLayout = new FillLayout(SWT.HORIZONTAL);
c.setLayout(cLayout);
c.setSize(563, 265);
//Composite
Composite compositeEmbedded = new Composite(c, SWT.EMBEDDED);
FillLayout compositeEmbeddedLayout = new FillLayout(SWT.HORIZONTAL);
compositeEmbedded.setLayout(compositeEmbeddedLayout);
//Frame AWT => heavy weight component to avoid focus problems
Frame frameAWT = SWT_AWT.new_Frame(compositeEmbedded);
compositeEmbedded.setData(frameAWT);
//Panel AWT
Panel panelAWT = new Panel();
BorderLayout panelAWTLayout = new BorderLayout();
panelAWT.setLayout(panelAWTLayout);
frameAWT.add(panelAWT);
//Adding the swing panel
panelAWT.add(swingPanel, BorderLayout.CENTER);
}
class MyShellAdapter extends ShellAdapter {
public void shellClosed(ShellEvent e) {
//super.shellClosed(e);
try {
e.doit = controller.onClose();
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
}
class SampleSwingPanel extends JPanel{
public SampleSwingPanel() {
this.setLayout(new BorderLayout());
this.add(new JTextField("test"), BorderLayout.NORTH);
}
}
abstract class AbstractController {
abstract public boolean onClose() throws Exception;
}
class Controller extends AbstractController {
public boolean onClose() throws Exception {
if(JOptionPane.showConfirmDialog(null,
"Quit without saving ?",
"Attention", JOptionPane.YES_NO_OPTION,
JOptionPane.QUESTION_MESSAGE)==JOptionPane.YES_OPTION)
return true;
else
return false;
}
}
/*********************************************************** *************************************/
I think my "swingInComposite()" method also cause some focus problems
between Swing and SWT.
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| Re: SWT+Swing hang application [message #467115 is a reply to message #467108] |
Wed, 25 January 2006 06:34  |
| Eclipse User |
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Originally posted by: nicolas._no.spam_legrain.fr
The application seems to hang only with this in the "swingInComposite" method :
public void swingInComposite(Shell shell, JPanel swingPanel) {
Composite compositeEmbedded = new Composite(shell, SWT.EMBEDDED);
FillLayout compositeEmbeddedLayout = new FillLayout(SWT.HORIZONTAL);
compositeEmbedded.setLayout(compositeEmbeddedLayout);
//Frame AWT => heavy weight component to avoid focus problems
Frame frameAWT = SWT_AWT.new_Frame(compositeEmbedded);
}
nm a écrit :
> Hi,
> I have a problem using SWT and Swing in an Eclipse RCP application.
> We would like to use only swing components in SWT Shell so I create a
> method that take a Shell and put a JPanel in.
>
> public void swingInComposite(Shell shell, JPanel swingPanel) {
> Composite c = new Composite(shell,SWT.NONE);
> FillLayout cLayout = new FillLayout(SWT.HORIZONTAL);
> c.setLayout(cLayout);
> c.setSize(563, 265);
> //Composite
> Composite compositeEmbedded = new Composite(c, SWT.EMBEDDED);
> FillLayout compositeEmbeddedLayout = new FillLayout(SWT.HORIZONTAL);
> compositeEmbedded.setLayout(compositeEmbeddedLayout);
> //Frame AWT => heavy weight component to avoid focus problems
> Frame frameAWT = SWT_AWT.new_Frame(compositeEmbedded);
> compositeEmbedded.setData(frameAWT);
> //Panel AWT
> Panel panelAWT = new Panel();
> BorderLayout panelAWTLayout = new BorderLayout();
> panelAWT.setLayout(panelAWTLayout);
> frameAWT.add(panelAWT);
> //Adding the swing panel
> panelAWT.add(swingPanel, BorderLayout.CENTER);
> }
>
> If in a such Shell (shell+jpanel) I open a JOptionPane.showConfirmDialog
> (...) on the shellClose event my application hang.
> If I open the same JOptionPane.showConfirmDialog(...) on an empty Shell,
> that's OK. I can make a choice in the JOptionPane and return to the shell.
> I don't understand my problem.
>
> Thanks for your help.
>
> Here is a code snippet :
> To test the 2 version (hang and don't hang), comment uncomment the call
> to swingInComposite(Shell s, JPanel p) in initAndShowUI().
> /*********************************************************** *************************************/
>
> import java.awt.BorderLayout;
> import java.awt.Color;
> import java.awt.Frame;
> import java.awt.Panel;
>
> import javax.swing.JOptionPane;
> import javax.swing.JPanel;
> import javax.swing.JTextField;
>
> import org.eclipse.swt.SWT;
> import org.eclipse.swt.awt.SWT_AWT;
> import org.eclipse.swt.events.ShellAdapter;
> import org.eclipse.swt.events.ShellEvent;
> import org.eclipse.swt.layout.FillLayout;
> import org.eclipse.swt.widgets.Composite;
> import org.eclipse.swt.widgets.Shell;
>
> public class TestShellEvent {
> public Shell shell;
> public AbstractController controller;
>
> public TestShellEvent() {}
>
> public static void main(String[] args) {
> org.eclipse.swt.widgets.Display display =
> org.eclipse.swt.widgets.Display
> .getDefault();
> TestShellEvent test = new TestShellEvent();
> test.initAndShowUI();
> while (!test.shell.isDisposed()) {
> if (!display.readAndDispatch())
> display.sleep();
> }
> display.dispose();
> }
>
> //
> public void initAndShowUI() {
> shell = new Shell();
> shell.setSize(600, 600);
> shell.setText("Test");
>
> this.controller = new Controller();
> shell.addShellListener(new MyShellAdapter());
>
> //comment this for the version that don't hang (empty shell)
> swingInComposite(shell,new SampleSwingPanel());
>
> shell.setLayout(new FillLayout());
> shell.layout();
> shell.setVisible(true);
> }
>
> /**
> * Embed a JPanel into an SWT Shell
> * @param shell
> * @param swingPanel
> */
> public void swingInComposite(Shell shell, JPanel swingPanel) {
> Composite c = new Composite(shell,SWT.NONE);
> FillLayout cLayout = new FillLayout(SWT.HORIZONTAL);
> c.setLayout(cLayout);
> c.setSize(563, 265);
> //Composite
> Composite compositeEmbedded = new Composite(c, SWT.EMBEDDED);
> FillLayout compositeEmbeddedLayout = new
> FillLayout(SWT.HORIZONTAL);
> compositeEmbedded.setLayout(compositeEmbeddedLayout);
> //Frame AWT => heavy weight component to avoid focus problems
> Frame frameAWT = SWT_AWT.new_Frame(compositeEmbedded);
> compositeEmbedded.setData(frameAWT);
> //Panel AWT
> Panel panelAWT = new Panel();
> BorderLayout panelAWTLayout = new BorderLayout();
> panelAWT.setLayout(panelAWTLayout);
> frameAWT.add(panelAWT);
> //Adding the swing panel
> panelAWT.add(swingPanel, BorderLayout.CENTER);
> }
>
> class MyShellAdapter extends ShellAdapter {
> public void shellClosed(ShellEvent e) {
> //super.shellClosed(e);
> try {
> e.doit = controller.onClose();
> } catch (Exception ex) {
> ex.printStackTrace();
> }
> }
> }
>
> }
>
> class SampleSwingPanel extends JPanel{
> public SampleSwingPanel() {
> this.setLayout(new BorderLayout());
> this.add(new JTextField("test"), BorderLayout.NORTH);
> }
> }
>
> abstract class AbstractController {
> abstract public boolean onClose() throws Exception;
> }
>
> class Controller extends AbstractController {
> public boolean onClose() throws Exception {
> if(JOptionPane.showConfirmDialog(null,
> "Quit without saving ?",
> "Attention", JOptionPane.YES_NO_OPTION,
> JOptionPane.QUESTION_MESSAGE)==JOptionPane.YES_OPTION)
> return true;
> else
> return false;
> }
> }
> /*********************************************************** *************************************/
>
>
> I think my "swingInComposite()" method also cause some focus problems
> between Swing and SWT.
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| Re: SWT+Swing hang application [message #467121 is a reply to message #467108] |
Wed, 25 January 2006 10:54 |
| Eclipse User |
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do you try add AWT frame like Snippet135
nm wrote:
> Hi,
> I have a problem using SWT and Swing in an Eclipse RCP application.
> We would like to use only swing components in SWT Shell so I create a
> method that take a Shell and put a JPanel in.
>
> public void swingInComposite(Shell shell, JPanel swingPanel) {
> Composite c = new Composite(shell,SWT.NONE);
> FillLayout cLayout = new FillLayout(SWT.HORIZONTAL);
> c.setLayout(cLayout);
> c.setSize(563, 265);
> //Composite
> Composite compositeEmbedded = new Composite(c, SWT.EMBEDDED);
> FillLayout compositeEmbeddedLayout = new FillLayout(SWT.HORIZONTAL);
> compositeEmbedded.setLayout(compositeEmbeddedLayout);
> //Frame AWT => heavy weight component to avoid focus problems
> Frame frameAWT = SWT_AWT.new_Frame(compositeEmbedded);
> compositeEmbedded.setData(frameAWT);
> //Panel AWT
> Panel panelAWT = new Panel();
> BorderLayout panelAWTLayout = new BorderLayout();
> panelAWT.setLayout(panelAWTLayout);
> frameAWT.add(panelAWT);
> //Adding the swing panel
> panelAWT.add(swingPanel, BorderLayout.CENTER);
> }
>
> If in a such Shell (shell+jpanel) I open a JOptionPane.showConfirmDialog
> (...) on the shellClose event my application hang.
> If I open the same JOptionPane.showConfirmDialog(...) on an empty Shell,
> that's OK. I can make a choice in the JOptionPane and return to the shell.
> I don't understand my problem.
>
> Thanks for your help.
>
> Here is a code snippet :
> To test the 2 version (hang and don't hang), comment uncomment the call
> to swingInComposite(Shell s, JPanel p) in initAndShowUI().
> /*********************************************************** *************************************/
> import java.awt.BorderLayout;
> import java.awt.Color;
> import java.awt.Frame;
> import java.awt.Panel;
>
> import javax.swing.JOptionPane;
> import javax.swing.JPanel;
> import javax.swing.JTextField;
>
> import org.eclipse.swt.SWT;
> import org.eclipse.swt.awt.SWT_AWT;
> import org.eclipse.swt.events.ShellAdapter;
> import org.eclipse.swt.events.ShellEvent;
> import org.eclipse.swt.layout.FillLayout;
> import org.eclipse.swt.widgets.Composite;
> import org.eclipse.swt.widgets.Shell;
>
> public class TestShellEvent {
> public Shell shell;
> public AbstractController controller;
>
> public TestShellEvent() {}
>
> public static void main(String[] args) {
> org.eclipse.swt.widgets.Display display = org.eclipse.swt.widgets.Display
> .getDefault();
> TestShellEvent test = new TestShellEvent();
> test.initAndShowUI();
> while (!test.shell.isDisposed()) {
> if (!display.readAndDispatch())
> display.sleep();
> }
> display.dispose();
> }
>
> //
> public void initAndShowUI() {
> shell = new Shell();
> shell.setSize(600, 600);
> shell.setText("Test");
>
> this.controller = new Controller();
> shell.addShellListener(new MyShellAdapter());
>
> //comment this for the version that don't hang (empty shell)
> swingInComposite(shell,new SampleSwingPanel());
>
> shell.setLayout(new FillLayout());
> shell.layout();
> shell.setVisible(true);
> }
>
> /**
> * Embed a JPanel into an SWT Shell
> * @param shell
> * @param swingPanel
> */
> public void swingInComposite(Shell shell, JPanel swingPanel) {
> Composite c = new Composite(shell,SWT.NONE);
> FillLayout cLayout = new FillLayout(SWT.HORIZONTAL);
> c.setLayout(cLayout);
> c.setSize(563, 265);
> //Composite
> Composite compositeEmbedded = new Composite(c, SWT.EMBEDDED);
> FillLayout compositeEmbeddedLayout = new FillLayout(SWT.HORIZONTAL);
> compositeEmbedded.setLayout(compositeEmbeddedLayout);
> //Frame AWT => heavy weight component to avoid focus problems
> Frame frameAWT = SWT_AWT.new_Frame(compositeEmbedded);
> compositeEmbedded.setData(frameAWT);
> //Panel AWT
> Panel panelAWT = new Panel();
> BorderLayout panelAWTLayout = new BorderLayout();
> panelAWT.setLayout(panelAWTLayout);
> frameAWT.add(panelAWT);
> //Adding the swing panel
> panelAWT.add(swingPanel, BorderLayout.CENTER);
> }
>
> class MyShellAdapter extends ShellAdapter {
> public void shellClosed(ShellEvent e) {
> //super.shellClosed(e);
> try {
> e.doit = controller.onClose();
> } catch (Exception ex) {
> ex.printStackTrace();
> }
> }
> }
>
> }
>
> class SampleSwingPanel extends JPanel{
> public SampleSwingPanel() {
> this.setLayout(new BorderLayout());
> this.add(new JTextField("test"), BorderLayout.NORTH);
> }
> }
>
> abstract class AbstractController {
> abstract public boolean onClose() throws Exception;
> }
>
> class Controller extends AbstractController {
> public boolean onClose() throws Exception {
> if(JOptionPane.showConfirmDialog(null,
> "Quit without saving ?",
> "Attention", JOptionPane.YES_NO_OPTION,
> JOptionPane.QUESTION_MESSAGE)==JOptionPane.YES_OPTION)
> return true;
> else
> return false;
> }
> }
> /*********************************************************** *************************************/
>
> I think my "swingInComposite()" method also cause some focus problems
> between Swing and SWT.
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| Re: SWT+Swing hang application [message #467133 is a reply to message #467121] |
Wed, 25 January 2006 11:38 |
| Eclipse User |
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|
Originally posted by: nicolas._no.spam_legrain.fr
Thanks for your answer.
After looking the snippet 135, I haven't seen major difference between this code
and my code. They use SWT_AWT.new_Frame() to obtain a Frame then directly add
AWT component or add a Panel before if they want to add a Swing component.
If in "swingInComposite()" there is only
public void swingInComposite(Shell shell, JPanel swingPanel) {
Frame frameAWT = SWT_AWT.new_Frame(shell);
}
the application hangs when I open the JOptionPane (in the shellClosed event).
I've tried with other JDialog and the application only hangs if the JDialog
is modal (like the JOptionPane).
I think it is a threading issue.
Haris Peco a écrit :
> do you try add AWT frame like Snippet135
> nm wrote:
>
>> Hi,
>> I have a problem using SWT and Swing in an Eclipse RCP application.
>> We would like to use only swing components in SWT Shell so I create a
>> method that take a Shell and put a JPanel in.
>>
>> public void swingInComposite(Shell shell, JPanel swingPanel) {
>> Composite c = new Composite(shell,SWT.NONE);
>> FillLayout cLayout = new FillLayout(SWT.HORIZONTAL);
>> c.setLayout(cLayout);
>> c.setSize(563, 265);
>> //Composite
>> Composite compositeEmbedded = new Composite(c, SWT.EMBEDDED);
>> FillLayout compositeEmbeddedLayout = new FillLayout(SWT.HORIZONTAL);
>> compositeEmbedded.setLayout(compositeEmbeddedLayout);
>> //Frame AWT => heavy weight component to avoid focus problems
>> Frame frameAWT = SWT_AWT.new_Frame(compositeEmbedded);
>> compositeEmbedded.setData(frameAWT);
>> //Panel AWT
>> Panel panelAWT = new Panel();
>> BorderLayout panelAWTLayout = new BorderLayout();
>> panelAWT.setLayout(panelAWTLayout);
>> frameAWT.add(panelAWT);
>> //Adding the swing panel
>> panelAWT.add(swingPanel, BorderLayout.CENTER);
>> }
>>
>> If in a such Shell (shell+jpanel) I open a JOptionPane.showConfirmDialog
>> (...) on the shellClose event my application hang.
>> If I open the same JOptionPane.showConfirmDialog(...) on an empty Shell,
>> that's OK. I can make a choice in the JOptionPane and return to the shell.
>> I don't understand my problem.
>>
>> Thanks for your help.
>>
>> Here is a code snippet :
>> To test the 2 version (hang and don't hang), comment uncomment the call
>> to swingInComposite(Shell s, JPanel p) in initAndShowUI().
>> /*********************************************************** *************************************/
>> import java.awt.BorderLayout;
>> import java.awt.Color;
>> import java.awt.Frame;
>> import java.awt.Panel;
>>
>> import javax.swing.JOptionPane;
>> import javax.swing.JPanel;
>> import javax.swing.JTextField;
>>
>> import org.eclipse.swt.SWT;
>> import org.eclipse.swt.awt.SWT_AWT;
>> import org.eclipse.swt.events.ShellAdapter;
>> import org.eclipse.swt.events.ShellEvent;
>> import org.eclipse.swt.layout.FillLayout;
>> import org.eclipse.swt.widgets.Composite;
>> import org.eclipse.swt.widgets.Shell;
>>
>> public class TestShellEvent {
>> public Shell shell;
>> public AbstractController controller;
>>
>> public TestShellEvent() {}
>>
>> public static void main(String[] args) {
>> org.eclipse.swt.widgets.Display display = org.eclipse.swt.widgets.Display
>> .getDefault();
>> TestShellEvent test = new TestShellEvent();
>> test.initAndShowUI();
>> while (!test.shell.isDisposed()) {
>> if (!display.readAndDispatch())
>> display.sleep();
>> }
>> display.dispose();
>> }
>>
>> //
>> public void initAndShowUI() {
>> shell = new Shell();
>> shell.setSize(600, 600);
>> shell.setText("Test");
>>
>> this.controller = new Controller();
>> shell.addShellListener(new MyShellAdapter());
>>
>> //comment this for the version that don't hang (empty shell)
>> swingInComposite(shell,new SampleSwingPanel());
>>
>> shell.setLayout(new FillLayout());
>> shell.layout();
>> shell.setVisible(true);
>> }
>>
>> /**
>> * Embed a JPanel into an SWT Shell
>> * @param shell
>> * @param swingPanel
>> */
>> public void swingInComposite(Shell shell, JPanel swingPanel) {
>> Composite c = new Composite(shell,SWT.NONE);
>> FillLayout cLayout = new FillLayout(SWT.HORIZONTAL);
>> c.setLayout(cLayout);
>> c.setSize(563, 265);
>> //Composite
>> Composite compositeEmbedded = new Composite(c, SWT.EMBEDDED);
>> FillLayout compositeEmbeddedLayout = new FillLayout(SWT.HORIZONTAL);
>> compositeEmbedded.setLayout(compositeEmbeddedLayout);
>> //Frame AWT => heavy weight component to avoid focus problems
>> Frame frameAWT = SWT_AWT.new_Frame(compositeEmbedded);
>> compositeEmbedded.setData(frameAWT);
>> //Panel AWT
>> Panel panelAWT = new Panel();
>> BorderLayout panelAWTLayout = new BorderLayout();
>> panelAWT.setLayout(panelAWTLayout);
>> frameAWT.add(panelAWT);
>> //Adding the swing panel
>> panelAWT.add(swingPanel, BorderLayout.CENTER);
>> }
>>
>> class MyShellAdapter extends ShellAdapter {
>> public void shellClosed(ShellEvent e) {
>> //super.shellClosed(e);
>> try {
>> e.doit = controller.onClose();
>> } catch (Exception ex) {
>> ex.printStackTrace();
>> }
>> }
>> }
>>
>> }
>>
>> class SampleSwingPanel extends JPanel{
>> public SampleSwingPanel() {
>> this.setLayout(new BorderLayout());
>> this.add(new JTextField("test"), BorderLayout.NORTH);
>> }
>> }
>>
>> abstract class AbstractController {
>> abstract public boolean onClose() throws Exception;
>> }
>>
>> class Controller extends AbstractController {
>> public boolean onClose() throws Exception {
>> if(JOptionPane.showConfirmDialog(null,
>> "Quit without saving ?",
>> "Attention", JOptionPane.YES_NO_OPTION,
>> JOptionPane.QUESTION_MESSAGE)==JOptionPane.YES_OPTION)
>> return true;
>> else
>> return false;
>> }
>> }
>> /*********************************************************** *************************************/
>>
>> I think my "swingInComposite()" method also cause some focus problems
>> between Swing and SWT.
>
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| Re: SWT+Swing hang application [message #467139 is a reply to message #467133] |
Wed, 25 January 2006 13:34 |
| Eclipse User |
|
|
|
what mean 'application hang'
you have NPE or what ?
nm wrote:
> Thanks for your answer.
> After looking the snippet 135, I haven't seen major difference between
> this code and my code. They use SWT_AWT.new_Frame() to obtain a Frame then
> directly add AWT component or add a Panel before if they want to add a
> Swing component. If in "swingInComposite()" there is only
> public void swingInComposite(Shell shell, JPanel swingPanel) {
> Frame frameAWT = SWT_AWT.new_Frame(shell);
> }
> the application hangs when I open the JOptionPane (in the shellClosed
> event). I've tried with other JDialog and the application only hangs if
> the JDialog is modal (like the JOptionPane).
> I think it is a threading issue.
>
> Haris Peco a écrit :
>> do you try add AWT frame like Snippet135
>> nm wrote:
>>
>>> Hi,
>>> I have a problem using SWT and Swing in an Eclipse RCP application.
>>> We would like to use only swing components in SWT Shell so I create a
>>> method that take a Shell and put a JPanel in.
>>>
>>> public void swingInComposite(Shell shell, JPanel swingPanel) {
>>> Composite c = new Composite(shell,SWT.NONE);
>>> FillLayout cLayout = new FillLayout(SWT.HORIZONTAL);
>>> c.setLayout(cLayout);
>>> c.setSize(563, 265);
>>> //Composite
>>> Composite compositeEmbedded = new Composite(c, SWT.EMBEDDED);
>>> FillLayout compositeEmbeddedLayout = new FillLayout(SWT.HORIZONTAL);
>>> compositeEmbedded.setLayout(compositeEmbeddedLayout);
>>> //Frame AWT => heavy weight component to avoid focus problems
>>> Frame frameAWT = SWT_AWT.new_Frame(compositeEmbedded);
>>> compositeEmbedded.setData(frameAWT);
>>> //Panel AWT
>>> Panel panelAWT = new Panel();
>>> BorderLayout panelAWTLayout = new BorderLayout();
>>> panelAWT.setLayout(panelAWTLayout);
>>> frameAWT.add(panelAWT);
>>> //Adding the swing panel
>>> panelAWT.add(swingPanel, BorderLayout.CENTER);
>>> }
>>>
>>> If in a such Shell (shell+jpanel) I open a JOptionPane.showConfirmDialog
>>> (...) on the shellClose event my application hang.
>>> If I open the same JOptionPane.showConfirmDialog(...) on an empty Shell,
>>> that's OK. I can make a choice in the JOptionPane and return to the
>>> shell. I don't understand my problem.
>>>
>>> Thanks for your help.
>>>
>>> Here is a code snippet :
>>> To test the 2 version (hang and don't hang), comment uncomment the call
>>> to swingInComposite(Shell s, JPanel p) in initAndShowUI().
>>> /*********************************************************** *************************************/
>>> import java.awt.BorderLayout;
>>> import java.awt.Color;
>>> import java.awt.Frame;
>>> import java.awt.Panel;
>>>
>>> import javax.swing.JOptionPane;
>>> import javax.swing.JPanel;
>>> import javax.swing.JTextField;
>>>
>>> import org.eclipse.swt.SWT;
>>> import org.eclipse.swt.awt.SWT_AWT;
>>> import org.eclipse.swt.events.ShellAdapter;
>>> import org.eclipse.swt.events.ShellEvent;
>>> import org.eclipse.swt.layout.FillLayout;
>>> import org.eclipse.swt.widgets.Composite;
>>> import org.eclipse.swt.widgets.Shell;
>>>
>>> public class TestShellEvent {
>>> public Shell shell;
>>> public AbstractController controller;
>>>
>>> public TestShellEvent() {}
>>>
>>> public static void main(String[] args) {
>>> org.eclipse.swt.widgets.Display display =
>>> org.eclipse.swt.widgets.Display .getDefault();
>>> TestShellEvent test = new TestShellEvent();
>>> test.initAndShowUI();
>>> while (!test.shell.isDisposed()) {
>>> if (!display.readAndDispatch())
>>> display.sleep();
>>> }
>>> display.dispose();
>>> }
>>>
>>> //
>>> public void initAndShowUI() {
>>> shell = new Shell();
>>> shell.setSize(600, 600);
>>> shell.setText("Test");
>>>
>>> this.controller = new Controller();
>>> shell.addShellListener(new MyShellAdapter());
>>>
>>> //comment this for the version that don't hang (empty shell)
>>> swingInComposite(shell,new SampleSwingPanel());
>>>
>>> shell.setLayout(new FillLayout());
>>> shell.layout();
>>> shell.setVisible(true);
>>> }
>>>
>>> /**
>>> * Embed a JPanel into an SWT Shell
>>> * @param shell
>>> * @param swingPanel
>>> */
>>> public void swingInComposite(Shell shell, JPanel swingPanel) {
>>> Composite c = new Composite(shell,SWT.NONE);
>>> FillLayout cLayout = new FillLayout(SWT.HORIZONTAL);
>>> c.setLayout(cLayout);
>>> c.setSize(563, 265);
>>> //Composite
>>> Composite compositeEmbedded = new Composite(c, SWT.EMBEDDED);
>>> FillLayout compositeEmbeddedLayout = new FillLayout(SWT.HORIZONTAL);
>>> compositeEmbedded.setLayout(compositeEmbeddedLayout);
>>> //Frame AWT => heavy weight component to avoid focus problems
>>> Frame frameAWT = SWT_AWT.new_Frame(compositeEmbedded);
>>> compositeEmbedded.setData(frameAWT);
>>> //Panel AWT
>>> Panel panelAWT = new Panel();
>>> BorderLayout panelAWTLayout = new BorderLayout();
>>> panelAWT.setLayout(panelAWTLayout);
>>> frameAWT.add(panelAWT);
>>> //Adding the swing panel
>>> panelAWT.add(swingPanel, BorderLayout.CENTER);
>>> }
>>>
>>> class MyShellAdapter extends ShellAdapter {
>>> public void shellClosed(ShellEvent e) {
>>> //super.shellClosed(e);
>>> try {
>>> e.doit = controller.onClose();
>>> } catch (Exception ex) {
>>> ex.printStackTrace();
>>> }
>>> }
>>> }
>>>
>>> }
>>>
>>> class SampleSwingPanel extends JPanel{
>>> public SampleSwingPanel() {
>>> this.setLayout(new BorderLayout());
>>> this.add(new JTextField("test"), BorderLayout.NORTH);
>>> }
>>> }
>>>
>>> abstract class AbstractController {
>>> abstract public boolean onClose() throws Exception;
>>> }
>>>
>>> class Controller extends AbstractController {
>>> public boolean onClose() throws Exception {
>>> if(JOptionPane.showConfirmDialog(null,
>>> "Quit without saving ?",
>>> "Attention", JOptionPane.YES_NO_OPTION,
>>> JOptionPane.QUESTION_MESSAGE)==JOptionPane.YES_OPTION)
>>> return true;
>>> else
>>> return false;
>>> }
>>> }
>>> /*********************************************************** *************************************/
>>>
>>> I think my "swingInComposite()" method also cause some focus problems
>>> between Swing and SWT.
>>
|
|
|
| Re: SWT+Swing hang application [message #467143 is a reply to message #467139] |
Wed, 25 January 2006 13:05 |
| Eclipse User |
|
|
|
Originally posted by: nicolas._no.spam_legrain.fr
The GUI freeze and there is no error in the console.
I only can move the windows of my application (very slowly) and reduce/retorre
them on the task bar.
After the problem, the only way to close the program is Ctrl+Alt+Suppr
Haris Peco a écrit :
> what mean 'application hang'
> you have NPE or what ?
> nm wrote:
>
>> Thanks for your answer.
>> After looking the snippet 135, I haven't seen major difference between
>> this code and my code. They use SWT_AWT.new_Frame() to obtain a Frame then
>> directly add AWT component or add a Panel before if they want to add a
>> Swing component. If in "swingInComposite()" there is only
>> public void swingInComposite(Shell shell, JPanel swingPanel) {
>> Frame frameAWT = SWT_AWT.new_Frame(shell);
>> }
>> the application hangs when I open the JOptionPane (in the shellClosed
>> event). I've tried with other JDialog and the application only hangs if
>> the JDialog is modal (like the JOptionPane).
>> I think it is a threading issue.
>>
>> Haris Peco a écrit :
>>> do you try add AWT frame like Snippet135
>>> nm wrote:
>>>
>>>> Hi,
>>>> I have a problem using SWT and Swing in an Eclipse RCP application.
>>>> We would like to use only swing components in SWT Shell so I create a
>>>> method that take a Shell and put a JPanel in.
>>>>
>>>> public void swingInComposite(Shell shell, JPanel swingPanel) {
>>>> Composite c = new Composite(shell,SWT.NONE);
>>>> FillLayout cLayout = new FillLayout(SWT.HORIZONTAL);
>>>> c.setLayout(cLayout);
>>>> c.setSize(563, 265);
>>>> //Composite
>>>> Composite compositeEmbedded = new Composite(c, SWT.EMBEDDED);
>>>> FillLayout compositeEmbeddedLayout = new FillLayout(SWT.HORIZONTAL);
>>>> compositeEmbedded.setLayout(compositeEmbeddedLayout);
>>>> //Frame AWT => heavy weight component to avoid focus problems
>>>> Frame frameAWT = SWT_AWT.new_Frame(compositeEmbedded);
>>>> compositeEmbedded.setData(frameAWT);
>>>> //Panel AWT
>>>> Panel panelAWT = new Panel();
>>>> BorderLayout panelAWTLayout = new BorderLayout();
>>>> panelAWT.setLayout(panelAWTLayout);
>>>> frameAWT.add(panelAWT);
>>>> //Adding the swing panel
>>>> panelAWT.add(swingPanel, BorderLayout.CENTER);
>>>> }
>>>>
>>>> If in a such Shell (shell+jpanel) I open a JOptionPane.showConfirmDialog
>>>> (...) on the shellClose event my application hang.
>>>> If I open the same JOptionPane.showConfirmDialog(...) on an empty Shell,
>>>> that's OK. I can make a choice in the JOptionPane and return to the
>>>> shell. I don't understand my problem.
>>>>
>>>> Thanks for your help.
>>>>
>>>> Here is a code snippet :
>>>> To test the 2 version (hang and don't hang), comment uncomment the call
>>>> to swingInComposite(Shell s, JPanel p) in initAndShowUI().
>>>> /*********************************************************** *************************************/
>>>> import java.awt.BorderLayout;
>>>> import java.awt.Color;
>>>> import java.awt.Frame;
>>>> import java.awt.Panel;
>>>>
>>>> import javax.swing.JOptionPane;
>>>> import javax.swing.JPanel;
>>>> import javax.swing.JTextField;
>>>>
>>>> import org.eclipse.swt.SWT;
>>>> import org.eclipse.swt.awt.SWT_AWT;
>>>> import org.eclipse.swt.events.ShellAdapter;
>>>> import org.eclipse.swt.events.ShellEvent;
>>>> import org.eclipse.swt.layout.FillLayout;
>>>> import org.eclipse.swt.widgets.Composite;
>>>> import org.eclipse.swt.widgets.Shell;
>>>>
>>>> public class TestShellEvent {
>>>> public Shell shell;
>>>> public AbstractController controller;
>>>>
>>>> public TestShellEvent() {}
>>>>
>>>> public static void main(String[] args) {
>>>> org.eclipse.swt.widgets.Display display =
>>>> org.eclipse.swt.widgets.Display .getDefault();
>>>> TestShellEvent test = new TestShellEvent();
>>>> test.initAndShowUI();
>>>> while (!test.shell.isDisposed()) {
>>>> if (!display.readAndDispatch())
>>>> display.sleep();
>>>> }
>>>> display.dispose();
>>>> }
>>>>
>>>> //
>>>> public void initAndShowUI() {
>>>> shell = new Shell();
>>>> shell.setSize(600, 600);
>>>> shell.setText("Test");
>>>>
>>>> this.controller = new Controller();
>>>> shell.addShellListener(new MyShellAdapter());
>>>>
>>>> //comment this for the version that don't hang (empty shell)
>>>> swingInComposite(shell,new SampleSwingPanel());
>>>>
>>>> shell.setLayout(new FillLayout());
>>>> shell.layout();
>>>> shell.setVisible(true);
>>>> }
>>>>
>>>> /**
>>>> * Embed a JPanel into an SWT Shell
>>>> * @param shell
>>>> * @param swingPanel
>>>> */
>>>> public void swingInComposite(Shell shell, JPanel swingPanel) {
>>>> Composite c = new Composite(shell,SWT.NONE);
>>>> FillLayout cLayout = new FillLayout(SWT.HORIZONTAL);
>>>> c.setLayout(cLayout);
>>>> c.setSize(563, 265);
>>>> //Composite
>>>> Composite compositeEmbedded = new Composite(c, SWT.EMBEDDED);
>>>> FillLayout compositeEmbeddedLayout = new FillLayout(SWT.HORIZONTAL);
>>>> compositeEmbedded.setLayout(compositeEmbeddedLayout);
>>>> //Frame AWT => heavy weight component to avoid focus problems
>>>> Frame frameAWT = SWT_AWT.new_Frame(compositeEmbedded);
>>>> compositeEmbedded.setData(frameAWT);
>>>> //Panel AWT
>>>> Panel panelAWT = new Panel();
>>>> BorderLayout panelAWTLayout = new BorderLayout();
>>>> panelAWT.setLayout(panelAWTLayout);
>>>> frameAWT.add(panelAWT);
>>>> //Adding the swing panel
>>>> panelAWT.add(swingPanel, BorderLayout.CENTER);
>>>> }
>>>>
>>>> class MyShellAdapter extends ShellAdapter {
>>>> public void shellClosed(ShellEvent e) {
>>>> //super.shellClosed(e);
>>>> try {
>>>> e.doit = controller.onClose();
>>>> } catch (Exception ex) {
>>>> ex.printStackTrace();
>>>> }
>>>> }
>>>> }
>>>>
>>>> }
>>>>
>>>> class SampleSwingPanel extends JPanel{
>>>> public SampleSwingPanel() {
>>>> this.setLayout(new BorderLayout());
>>>> this.add(new JTextField("test"), BorderLayout.NORTH);
>>>> }
>>>> }
>>>>
>>>> abstract class AbstractController {
>>>> abstract public boolean onClose() throws Exception;
>>>> }
>>>>
>>>> class Controller extends AbstractController {
>>>> public boolean onClose() throws Exception {
>>>> if(JOptionPane.showConfirmDialog(null,
>>>> "Quit without saving ?",
>>>> "Attention", JOptionPane.YES_NO_OPTION,
>>>> JOptionPane.QUESTION_MESSAGE)==JOptionPane.YES_OPTION)
>>>> return true;
>>>> else
>>>> return false;
>>>> }
>>>> }
>>>> /*********************************************************** *************************************/
>>>>
>>>> I think my "swingInComposite()" method also cause some focus problems
>>>> between Swing and SWT.
>
|
|
| | | |
| Re: SWT+Swing hang application [message #467200 is a reply to message #467163] |
Thu, 26 January 2006 05:13 |
| Eclipse User |
|
|
|
Originally posted by: nicolas._no.spam_legrain.fr
Thank you for the informations, your trick is working.
I will try with it.
Rich Kulp a écrit :
> You would do:
>
> java.awt.EventQueue.invokeLater(new Runnable() {
> public void run() {
> do your JOptions dialog
> process returned result;
> }
> });
>
> Note that this means that the SWT shell's close event will continue
> processing and the shell will close before the JOptions dialog comes up.
> You won't be able to stop it from closing. You can't stop the SWT
> display queue to wait for the JOptions dialog.
>
> If you absolutely must do that, then there is a trick. You just run the
> SWT display thread yourself. (I think this will work).
>
> public boolean onClose() throws Exception {
> final Display display = Display.getCurrent();
> final boolean[] runLoopAndContinue =
> new boolean[] {true, true};
> java.awt.EventQueue.invokeLater(new Runnable() {
> public void run() {
> runLoopAndContinue[1] =
> (JOptionPane.showConfirmDialog(null,
> "Quit without saving ?",
> "Attention", JOptionPane.YES_NO_OPTION,
> JOptionPane.QUESTION_MESSAGE)==JOptionPane.YES_OPTION);
> // Do syncExec so that display queue is emptied and entry
> // [0] changed on SWT UI thread.
> display.syncExec(new Runnable() {
> public run() {
> runLoopAndContinue[0] = false; // Tell onClose to
> stop looping.
> }
> });
> display.asyncExec(null); // Wake SWT UI thread up one more
> time to make sure it terminates.
> }
> });
>
> while(runLoopAndContinue[0]) {
> try {
> if (!display.readAndDispatch())
> display.sleep();
> } catch (Throwable e) {
> // process exception if you like.
> }
> }
> return runLoopAndContinue[1];
> }
>
>
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